Kiehl's cosmetics are immediately recognizable by their minimalist packaging, a holdover from their first days as an apothecary in New York's East Village, relying on free samples and word of mouth for testimonies of their formulations to spread. The effect of those testimonies were such that the firm came to count the likes of Andy Warhol amongst their most loyal customers. While Andy Warhol's favorite Kiehl's product was their blue astringent, containing witch hazel shaven and oily skin, men n...